398884871 has 8 divisors (see below), whose sum is σ = 497311104. Its totient is φ = 310819320.

The previous prime is 398884861. The next prime is 398884891. The reversal of 398884871 is 178488893.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 398884871 - 2⁶ = 398884807 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398884831) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2590085 + ... + 2590238.

It is an arithmetic number, because the mean of its divisors is an integer number (62163888).

Almost surely, 2^398884871 is an apocalyptic number.

398884871 is a deficient number, since it is larger than the sum of its proper divisors (98426233).

398884871 is a wasteful number, since it uses less digits than its factorization.

398884871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5180341.

The product of its digits is 3096576, while the sum is 56.

The square root of 398884871 is about 19972.1023179835. The cubic root of 398884871 is about 736.1209674112.

The spelling of 398884871 in words is "three hundred ninety-eight million, eight hundred eighty-four thousand, eight hundred seventy-one".